Formerly known as Azure AI Services or Azure Cognitive Services is a unified collection of prebuilt AI capabilities within the Microsoft Foundry platform
Hello @Ivan semenov
They are both working for your scenario, but, Form Recognizer Studio is V3.0 now, Sample Labeling Tool currently is on V2.0, I would say if you are not very familiar with Sample Labeling Tool, you should start with Studio - which is easy to use and understand.
Thank you.
Regards,
Yutong